Oil-burner.



No. 633,761. Patented sept. 26, 1399.

A. JOHNSON.

UIL BURNER.

fApplication filed Jan. 17, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

AUGUST JOI-INSON, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO TI'IE OIL FUELSAVING COMPANY, OF SAME PLACE. i

OIL-BURNER.

SPECIFICATION forming part of Letters Patent No. 633,761, dated September 26, 1899. Application filed January 17, 1899. Serial No. 702,446. (N0 modem To all who/1i, 'it Hwy concern.-

Be it knownthat I, AUGUST JOHNSON, a citizen of the United States, residing in the city and county of San Francisco, State of California, have invented an Improvement in Oil-Burners; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an improved apparatus for the combustion of oil to be used especially in furnaces and the like heating devices.

It consists, essentially, in a novel construction and combination of mixing and burner tubes with peculiarly-shaped discharge-nozzles and means for regulating the supply of air and oil thereto.

It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure l is a longitudinal vertical section through my burner on line .e z of Fig 3. Fig. 2 is a horizontal section on line y y of Fig. l. Fig. 3 is a cross-section on line Qc or. of Fig. l. Fig. 4 is a detail of the removable portion of the exterior tube.

My burner consists of an exterior tube A and an interior tube B.

The exterior tube A has a compressed and attened lateral opening made in the front by compressing the upper and lower portions of the tube and extendingor flattening them transversely in the manner shown at a. Rearwardly the tube becomes gradually cylindrical in cross-section and is adapted to screw into one end of a T C, the rear end lof which is closed, but is provided with a removable plug, as at D, so that access may be had to the interior in the rear end. The lower branch of the T is connected with any source of air-supply, through which the blast 'of air is delivered into the T and thence passes into the remainder of the apparatus.

The inner tube B is in the form of a segment, as shown, the upper halt coinciding approximately with the curvature of the upper part of the outer tube A and the lower part being essentially flat. This inner section has also the flattened and transverselyelongated discharge opening or mouth at the front. It is introduced and removed by mal;- ing the outer section A with a removable cover A, which forms a considerable portiony of the upper front part of the tube, and is secured in place by suitable lugs E and holding-bolts. W'hen this covered portion A has been removed, the part B may be inserted, and it is supported by transverse trunnions IJ, which project so as to rest in corresponding concavities a', which are made in the interior of the lugs E, halt ot' each concavity being in the lower and halt` in the upper lug, so that when the pipe B has been placed its arms b will rest in the concavities a', and when the upper section A of the outer pipe has been placed and the lugs E bolted together these arms h will be clamped in place and the inner pipe B rmly held. The rear end of the inner pipe B is beveled or cut away angularly toward the rear, as shown at B', and this cut-away portion stands in line' above the rear half of the air-inlet opening of the T C, so that air admitted through this T is delivered directlyinto the interior of B, passing out through the discharge-mouth, as will be hereinafterl described.

Surrounding the part B is a slidable damper Gr, having a rod H extending through the rear end of the apparatus, by which rod the damper may be moved forward or backward. When moved forward so as to abutagainst the inner end of the outside pipe A where it screws into the T C, the air-passage around the interior pipe will be entirely closed. By retracting this damper the passage below the pipe B will first be opened, and when the damper is retracted so that air from the T can pass within the damper and around the pipe B it is also admitted into the upper semicircular channel between A and B, and this portion of the air will then be delivered through the upper part of the nozzle a. The proportion of air admitted in'to the interior pipe B and into the lower and upper parts 01:' the passage between this pipe and the outside pipe A is regulated by the movements of the damper. In proportionate size the lower passage in the pipe A has a discharge about equal in area to that of the passage a IOO in the upper part of A and the passage in the mouth of the pipe B.

In order to properly distribute the oil, it is brought through a pipe I, which, passing down through the upper portions of the pipes A and B, has its mouth just withiuthe pipe B.

J is a distributing-plate fixed on the inside of the pipe B, projecting forwardly and down'- wardly and having the central line slightly raised, so that the oil falling upon this will be caused to diverge toward the periphery, while at the same time moving to the front, where it is discharged in a thin dat sheetover the front edge of this plate J. Then the oil leaves the edge of this plate, it is caught by the blast of air passing through the pipe B and is ejected through the horizontally-flattened nozzle at the front of B, the shape of this nozzle being such as to throw it out in a thin iiat diverging sheet. At this point an additional amount of air is brought both from the channel above the pipe B and from the channel below. This channel c2 below the pipe B is turned upwardly at an incline, as shown, so that the discharge acts to lift and throw the mixed sheet of vaporized oil and air upwardly and the mingling with the additional body of air produces a very perfect combustion. From the point of discharge the burning product is then delivered into the furnace in any suitable or desired manner, either directly or by dei'iector or otherwise.

Having thus described my invention, what.

I claim as new, and desire to secure by Letters Patent, is-

l. An oil-burner consisting of an exterior tube having the attened transverse discharge-opening at the front, an interior segmental tube, the upper part of which coincides essentially with the curvature of the interior of the outer tube and having a iiat bottom, said tube being compressed to form a transversely-extended discharge-nozzle within the nozzle of the outer tube, au oil-supply pipe leading into the upper part of the inner tube, a spreading deflector upon which the oil is received and by which it is distributed within the inner tube and an air-supply pipe opening into the rear of the two tubes as described.

2. An oil-burner comprising an exterior tube having the front flattened to form a horizontally-divergent opening, aA segmental interior tube having its upper portion essentially coincident with the curvature ofthe cor-- responding part of the outer tube and having a dat bottom whereby air-passages of diierent areas are formed in the upper and lower part of the outer tube, a compressed flattened nozzle forming the front of the inner tube and discharging centrally through the opening of the cuter tube, an upwardly-inclined neck whereby the air discharged from the lower part of the outer tube is deiiected upwardly to intersect the vapor escaping from the inner tube, au oil-supply pipe leading into the inner tube, an inclined divergent deflec-V tor upon which the oil is received, and an inlet through which air is supplied to both inner and outer tubes.

3. In an oil-burner, an exterior tube, hav- 'ing the screw-threaded cylindrical rear end,

a T into which this end of the tube is fitted, an interior segmental tube supported Within the outer tube, both of said tubes being gradually flattened toward the front and compressed to form essentially concentric and horizontally-divergent discharge-nozzles, an oil-supply pipe -and a deiiector Within the inner tube upon which the oil is received and distributed, an air-inlet opening'into the T,

'and compressed to form horizontal diverging concentric discharge-openings.

5. In a burner of the character described, an outer tube with a T in which the rear end is secured, a removable top with holding lugs and bolts, sockets formed in the inner part of the lugs, an inner segmental tube, the upper half of which is approximately coincident and shaped with the corresponding part of the outer tube, and the lower part of which is essentially fiat, said inner tube having projecting trunnions adapted to it the sockets in the outer tube and be clamped therein when the cover of the outer tube has been secured in place.

G. In a burner of the character described, an exterior tube, a T into which the rear end of said tube is fitted, a removably-supported interior segmental tube having an oilsupply and detlectornear the front, dischargenozzles formed in the. two tubes by lvertical compression of the front ot the tubes whereby horizontally diverging flattened concentric discharge-openings are formed, a damper surrounding the rear portion of the inner tube, and means whereby it is slidable thereon to entirely close the passage between the two tubes or to admit and regulate a supply of air into the upper and lower channels thereof respectively.

7. In a burner of the character described, the outer and inner tubes with the attened dischargenozzles at the front, an oil-supply and detiector near the front of the inner tube, a T into which the rear end of the outer IOO IIO

IIS

' W tube is secured and into theinteriorof which of air admitted to the upper and lower Seo'- tlie rea-r end of the inner tube projects, said tions around the inner tube is regulated. m inner tube having its rear end inclined to In Witness whereof I have hereunto set my form an air-receiving opening in line with hand.

the air-supply passage through the T and AUGUST JOHNSON. having a ilattened bottom and a damper surlVitnesses:

rounding the rear of said inner tube and slid- S. H. NOURSE,

able thereon whereby a proportionate amount JESSIE C. BRODIE. 

